This is the bag. Mother of all ‘it’ bags, really,' author Marisa Meltzer says in a video shared by Sotheby's to promote the auction.

Born out of a chance encounter, Jane Birkin's original Hermès bag has surpassed all expectations and sold for €8.6 million in Paris to become the second most valuable fashion item ever bought at an auction.

The original Birkin bag, named after the actor, singer and fashion icon that Hermès created it for — the late Jane Birkin — is up for auction in Paris.

Kylie Jenner is no stranger to one-of-a-kind pieces of fashion. She's been known to wear custom dresses at runway shows in Paris, lean into a throwback accessory, or coordinate with her boyfriend Timothée Chalamet at the Golden Globes. So it was no surprise to see that she casually owns two rare Hermès purses.